Worksheets3rd 9 weeks Exam Physical Science
Total questions: 15
Worksheet time: 1hrs 15mins
In what direction does heat flow spontaneously?
hot to cold objects.
cold to hot objects
right to left
left to right
What causes thermal expansion?
When the temperature drops
When particles of matter move farther apart as temperature increases
When particles are compressed
What are the three main types of mechanical waves?
sound waves
surface wave
longitudinal waves
transverse waves
How does an object’s temperature affect radiation?
As an object's temperature increases, the rate at which it radiates energy increases
As an object's temperature increases, the rate at which it radiates energy decreases.
As an object's temperature decreases, the rate at which it radiates energy decreases.
How many laws of thermodynamics are there?
3
4
2
5
What are the two types of combustion engines? ( 2 answers )
internal
exothermal
external
endothermal
What item reverses the normal flow of heat in cooling systems?
Radiator
Heat Pump
Alternator
Thermostat
What determines the frequency of a wave?
A wave's frequency equals the frequency of the vibrating source producing the wave
Increasing the frequency of a wave decreases its wavelength
None of the above
How is the amplitude of a wave related to the wave's energy?
They both the same
The less energy a wave has the weaker its amplitude
The more energy a wave has, the greater is its amplitude
What are the two types of interference? ( 2 answers )
Destructive
Productive
Manipulative
Constructive
What causes the refraction of a wave when it enters a new medium?
Because both sides move violently
because one side of the wave moves more slowly than the other side
Because of the laws of physics
Ultrasound is used in a variety of applications such as ( 2 answers
Sonar
Telepathy
Ultrasound Imaging
Astronomy
How is sound recorded?
by converting mechanical waves into electronic signals
that can be processed and stored forever
by converting sound waves into electronic signals
that can be processed and stored
by converting electromagnetic waves into electronic signals
that can be processed and stored
- a change in sound frequency caused by motion of the sound source, motion of the
listener, or both
Pitch
Resonance
Doppler Effect
Intensity
________________uses the principle that heat flows from a hotter object to a colder object until both reach the same temperature.
calorimeter
thermostat
heat pump
